FRP DUCT COVER...Title: Microsoft Word - FRP DUCT COVER.doc Author: Staff Created Date: 5/8/2007 12:13:07 PM

VIRON® INTERNATIONAL CORPORATION

989-723-8255

Complete System Solutions for Moving Corrosive Air www.vironintl.com

FRP DUCT

Fittings

Stacks

Specifications

standards. Through the use of our computer controlled filament winding machine, we can manufacture to exact material thicknesses and control the resin/glass ratio to your exact needs.

EXPERIENCE - VIRON® has been in business for over thirty (30)years. All of this experience has been as manufacturers of

Plastics Manufacturing

Clean RoomsCoatingsElectro-Chemical Machin

PhotographicPickling

Laboratories

Emergency Chlorine

Medical

FoundryGlassIndustrial Waste Treatme

Food Processing

EtchingFish Processing

Tank VentingTextiles

PlatingPrinted CircuitsPulp and PaperRefiningSemiconductorsStripping

Metal CleaningBreweriesChemical Filling Operatio

PhosphatingChemical Industries

Municipal Waste TreatmentPetrochemical Pharmaceuticals

DELIVERY - Our customers are NUMBER ONE. We have made the commitment to react to every customer's delivery needs. This

Batteries

TYPICAL VIRON® APPLICATIONS

Anodizing Metal Recovery

commitment has allowed VIRON® to maintain a constant flow of repeat business. Our customers know if they need the delivery, we

CAPACITY - VIRON's 65,000 square feet Manufacturing Facility canproduce over a million pounds of fiberglass duct and fittings annually.

for many of the applications listed below where corrosion is a major problem.

The company consistently fabricates duct and complete duct systems

Corrosion Resistant Thermosetting Plastic Duct. Our management

MANUFACTURING - VIRON® manufactures its duct to rigid quality

FIBE

RGLA

SS D

UCT

& FI

TTIN

GS

VIRON® has grown to become a leader in designing andmanufacturing Corrosion Resistant Air Scrubbers, Fans, and Exhaust Duct. Our personnel consists of a sales staff

team has over 160 years of combined experience working at VIRON®

alone. Our experience is unparalleled in this industry, and that experience will pay dividends on your projects.

DESIGN - VIRON® utilizes Intergraph Computer Assisted Drafting

and application engineers who are well known and highly regarded in the industry. Many of our duct products hold manufacturing certificates, including low flame/smoke "Viro-Duc®" certified by Factory Mutual, a highly corrosion resistant duct certified by the ICBO, and a PVC fume exhaust duct "VI-A-DUC®" certified by Factory Mutual. When you buy from VIRON®, you are buying a proven, fieldtested product from a company with over thirty (30) years of manufacturing expertise. VIRON® is sincerely interested in working with your engineers to solve your exhaust and scrubber corrosion problems.

and Design (CADD) equipment. This leading edge technology is compatible with most major engineering houses, where workstationmachines are the standard. We can interface with our smallest client to our largest.

will accommodate them.

QUALITY - Quality is the cornerstone of VIRON's philosophy. "FQ"First Quality is VIRON's commitment to our customers, which has ledus into a dominant industry position today and into the 21st century.

STRAIGHT DUCT

SEE PAGE 31 FOR DUCT VACUUM AND PRESSURE RATINGS. IF OTHER THAN STANDARD DESIGN RATINGS ARE REQUIRED, PLEASE CONSULT THE FACTORY.

0.375

0.250

0.3120.312200.312

NOTE: VIRON® WILL MANUFACTURE THE FRP DUCT AND FITTINGS TO THE STANDARD THICKNESSES

120 20

96108 0.375

2020

0.375

7884 20

66

72

2020

20

60 0.250

0.1870.2500.250

0.250

2020

0.1870.187

202020

20

4248

54

3638

40

0.1870.187

34

2020

0.18720

0.187

0.1250.1250.125

0.1870.125

0.125

0.18720

20

20

2020

20

32

26

2830

20

2224

1618

6

0.125

0.125

14

20

2020

VIRON® FRP DUCT

DUCT OR FITTING MODEL

DUCT OR FITTING DIAMETER

4 0.125

L DUCT

LENGTH FEET

12

A DIAMETER

10

0.1250.125

20

81220

12

SELECTION GUIDE004—ST12—VFDVIRON® MODEL CODE

DUCT THICKNESS

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE2) VIRON CAN MANUFACTURE THE ELBOW FITTINGS TO ANY RADIUS LENGTH

SMOOTH ELBOW (4" DIA. TO 36" DIA.)

SMOOTH ELBOW (4" DIA. TO 36" DIA)

(38" DIA. TO 120" DIA.)

60 DEGREE ELBOW

(38" DIA. TO 120" DIA.)

120 180

96 144108 162

72 10878 11784 126

66 99

54 8160 90

48 72

40 6042 63

38 57

34 5136 54

32 48

28 4230 45

26 39

22 3324 36

20 30

16 2418 27

14 21

10 1512 18

1) STANDARD SIZE ELBOW RADIUS SHOWN ABOVE2) VIRON CAN MANUFACTURE THE ELBOW FITTINGS TO ANY RADIUS LENGTH

4 6

162180

126

108

8190

6372

96108120

60

99

117

144

72

84

546066

4248

78

36 54

40

34

38 57

30

51

48

333639

69

12

DUCT THICKNESS

32

151821

2427

4245

26

2830

90 DEGREE ELBOW

8

10

46

A DIAMETER

B RADIUS

1214

161820

2224

1) STANDARD SIZE ELBOW RADIUS SHOWN ABOVE

A DIAMETER

B RADIUS

DUCT THICKNESS

6 98 12

NOTE

NOTE

101214

A DIAMETER

468

32

222426

2830

161820

24

B RADIUS

6912

2730

151821

333639

424548

0.1250.1250.125

0.1250.125

DUCT THICKNESS

0.1250.1250.125

0.125

0.1250.1870.187

0.1870.1870.187

0.18736 54 0.187

5134

38 57 0.187

404244

5456

464850

586072

60

99

117

144

52

0.18763 0.25072 0.250

81 0.25090 0.250

0.250

108 0.3120.312

126 0.312

0.375162 0.375180 0.375

A DIAMETER

B RADIUS

DUCT THICKNESS

4 6 0.1256 9 0.1258 12 0.125

10 15 0.12512 18 0.12514 21 0.125

16 24 0.12518 27 0.12520 30 0.125

22 33 0.12524 36 0.18726 39 0.187

28 42 0.18730 45 0.18732 48 0.187

34 51 0.18736 54 0.18738 57 0.187

40 60 0.18742 63 0.25048 72 0.250

54 81 0.25060 90 0.25066 99 0.250

144 0.375108

78 117 0.31284 126 0.312

45 DEGREE ELBOW

72 108 0.312

1) STANDARD SIZE ELBOW RADIUS SHOWN ABOVE 2) VIRON CAN MANUFACTURE THE ELBOW FITTINGS TO ANY RADIUS LENGTH

1) STANDARD SIZE ELBOW RADIUS SHOWN ABOVE 2) VIRON CAN MANUFACTURE THE ELBOW FITTINGS TO ANY RADIUS LENGTH

162 0.375120 180 0.375

96

(38" DIA. TO 120" DIA.)


(38" DIA. TO 120" DIA.)


30 DEGREE ELBOW

A.S. 5.656 0.125A.S. 8.484 0.125A.S. 11.312 0.125

A.S. 14.140 0.125A.S. 16.968 0.125A.S. 19.796 0.125

A.S. 22.624 0.125A.S. 25.452 0.125A.S. 28.280 0.125

A.S. 31.108 0.125A.S. 33.936 0.187A.S. 36.764 0.187

A.S. 39.592 0.187A.S. 42.420 0.187A.S. 45.248 0.187

A.S. 48.076 0.187A.S. 50.904 0.187A.S. 53.732 0.187

A.S. 56.560 0.187A.S. 59.388 0.250A.S. 67.872 0.250

A.S. 76.356 0.250A.S. 84.840 0.250A.S. 93.324 0.250

A.S. 101.808 0.312A.S. 110.292 0.312A.S. 118.776 0.312

A.S. 135.744 0.375A.S. 153.712 0.375A.S. 169.680 0.375

NOTE

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE A.S. MEANS ANY SIZE EQUAL TO OR LESS THAN A

6 C + 128 C + 12

A DIAMETER

46

90 DEGREE ELBOW WITH HEEL TAP

8

101214

1618

2830

20

2224

30

26

912

32

151821

2427

DUCT THICKNESS

424548

333639

B RADIUS

6

36 545134

38 57

404248 72

81

7278

546066

4 C + 12

108

84

3) VIRON CAN MANUFACTURE THE ELBOW FITTINGS TO ANY RADIUS LENGTH2) STANDARD SIZE ELBOW RADIUS SHOWN ABOVE 1) A.S. MEANS ANY SIZE EQUAL TO OR LESS THAN A

10 C + 1212 C + 1214 C + 12

16 C + 1218 C + 1220 C + 12

22 C + 1224 C + 1226 C + 12

28 C + 1230 C + 1232 C + 12

34 C + 1236 C + 1238 C + 12

40 C + 1242 C + 1248 C + 12

54 C + 1260 C + 1266 C + 12

C + 12

72 C + 1278 C + 12

DUCT THICKNESS

A DIAMETER

L LENGTH

120 C + 12

96 C + 12108 C + 12

84

90 DEGREE TEE


C DIAMETER

(38" DIA. TO 120" DIA.)

C DIAMETER

162180

144

90

60

D LENGTH

96108120

126117

99

63

C + 18C + 18C + 18

C + 18C + 18C + 18

C + 18C + 18C + 18

C + 18C + 18C + 18

C + 18C + 18C + 18

C + 18C + 18C + 18

C + 18C + 18C + 18

C + 18C + 18C + 18

C + 18C + 18C + 18

C + 18C + 18C + 18

NOTE

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

NOTE A.S. MEANS ANY SIZE EQUAL TO OR LESS THAN A

A.S. MEANS ANY SIZE LESS THAN A

90 DEGREE REDUCING TEE

90 DEGREE BOOT TEEL LENGTH

A.S.A.S.A.S.

A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

0.375

E DIAMETER

A.S.A.S.A.S.

A.S.A.S.A.S.

0.312

0.3750.375

0.250

0.3120.312

0.250

0.2500.250

0.187

0.1870.250

0.187

0.1870.187

0.187

0.1870.187

0.125

0.1250.187

0.125

0.1250.125

A.S. (A-E)5

L LENGTH

DUCT THICKNESS

0.1250.1250.125

0.1250.125

120 A.S. (A-E)5

96 A.S. (A-E)5108

78 A.S. (A-E)584 A.S. (A-E)5

72 A.S. (A-E)5

60 A.S. (A-E)566 A.S. (A-E)5

54 A.S. (A-E)5

42 A.S. (A-E)548 A.S. (A-E)5

40 A.S. (A-E)5

36 A.S. (A-E)538 A.S. (A-E)5

34 A.S. (A-E)5

30 A.S. (A-E)532 A.S. (A-E)5

28 A.S. (A-E)5

24 A.S. (A-E)526 A.S. (A-E)5

22 A.S. (A-E)5

18 A.S. (A-E)520 A.S. (A-E)5

16 A.S. (A-E)5

12 A.S. (A-E)514 A.S. (A-E)5

10 A.S. (A-E)5

6 A.S. (A-E)58 A.S. (A-E)5

A DIAMETER

C DIAMETER D LENGTH

4 A.S. (A-E)5

0.375A.S. 0.375A.S. 0.375

0.312A.S. 0.312

0.250

A.S. 0.312

A.S. 0.250A.S. 0.250

0.187A.S. 0.250A.S. 0.250

96108120

A.S.

A.S.

A.S.

A.S.

727884

546066

404248

38 A.S. 0.187

0.187

0.18736 A.S. 0.187

A.S.34

0.187

0.1870.187

0.125

0.1250.187

DUCT THICKNESS

0.1250.1250.125

A.S.A.S.A.S.

0.1250.1250.125

0.1250.125

A.S.A.S.A.S.

A.S.A.S.

A.S.A.S.A.S.

C DIAMETER

A.S.A.S.A.S.

2830

161820

A.S.

32

222426

A DIAMETER

468

101214

(A-E)5 A.S. 0.125(A-E)5 A.S. 0.125(A-E)5 A.S. 0.125

(A-E)5 A.S. 0.125(A-E)5 A.S. 0.125(A-E)5 A.S. 0.125

(A-E)5 A.S. 0.125(A-E)5 A.S. 0.125(A-E)5 A.S. 0.125

(A-E)5 A.S. 0.125(A-E)5 A.S. 0.187(A-E)5 A.S. 0.187

(A-E)5 A.S. 0.187(A-E)5 A.S. 0.187(A-E)5 A.S. 0.187

(A-E)5 A.S. 0.187(A-E)5 A.S. 0.187(A-E)5 A.S. 0.187

(A-E)5 A.S. 0.187(A-E)5 A.S. 0.250(A-E)5 A.S. 0.250

(A-E)5 A.S. 0.250(A-E)5 A.S. 0.250(A-E)5 A.S. 0.250

(A-E)5 A.S. 0.312(A-E)5 A.S. 0.312(A-E)5 A.S. 0.312

(A-E)5 A.S. 0.375(A-E)5 A.S. 0.375(A-E)5 A.S. 0.375

NOTE

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

120 C + 12 A.S.

96 C + 12 A.S.108 C + 12 A.S.

84 C + 12 A.S.

72 C + 12 A.S.78 C + 12 A.S.

66 C + 12 A.S.

54 C + 12 A.S.60 C + 12 A.S.

48 C + 12 A.S.

40 C + 12 A.S.42 C + 12 A.S.

38 C + 12 A.S.

34 C + 12 A.S.36 C + 12 A.S.

32 C + 12 A.S.

28 C + 12 A.S.30 C + 12 A.S.

26 C + 12 A.S.

22 C + 12 A.S.24 C + 12 A.S.

20 C + 12 A.S.

16 C + 12 A.S.18 C + 12 A.S.

14 C + 12 A.S.

10 C + 12 A.S.12 C + 12 A.S.

8 C + 12 A.S.

180 DEGREE CROSS4 C + 12 A.S.

A.S.C + 18 A.S.C + 18 A.S.

A.S.C + 18 A.S.

A.S.

C + 18 A.S.

C + 18 A.S.C + 18 A.S.

A.S.C + 18 A.S.C + 18 A.S.

96108120

C + 18

C + 18

C + 18

C + 18

727884

546066

404248

38 C + 18 A.S.

A.S.

A.S.36 C + 18 A.S.

C + 1834

A.S.

A.S.A.S.

A.S.

A.S.A.S.

C DIAMETER

A.S.A.S.A.S.

C + 18C + 18C + 18

A.S.A.S.A.S.

A.S.A.S.

C + 18C + 18C + 18

C + 18

L LENGTH C + 18C + 18C + 18

283032

C + 18C + 18C + 18

C + 18C + 18

222426

161820

90 DEGREE BOOT TEE WITH REDUCER

8

10


D LENGTH E DIAMETER

DUCT THICKNESS

A DIAMETER

46

1214

D DIAMETER

DUCT THICKNESS

1) A.S. MEANS ANY SIZE EQUAL TO OR LESS THAN A

2) C IS GREATER THAN, LESS THAN, OR EQUAL TO D

A DIAMETER

L LENGTH

C DIAMETER

6 C + 12 A.S.

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

101214

A DIAMETER

468

32

222426

2830

161820

C + 12

L LENGTHC + 12C + 12C + 12

C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

C + 12C + 12C + 12

A.S.A.S.A.S.

A.S.A.S.

C DIAMETER

A.S.A.S.A.S.

A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.36 C + 12 A.S.

C + 1234

38 C + 12 A.S.

404248

7884

546066

96108120

C + 12

C + 12

C + 12

C + 12

72

A.S.C + 12 A.S.C + 12 A.S.

C + 12 A.S.C + 12 A.S.

A.S.

C + 12 A.S.A.S.

C + 12 A.S.

A.S.C + 12 A.S.C + 12 A.S.

C DIAMETER

4 C + 12 A.S.6 C + 12 A.S.8 C + 12 A.S.

10 C + 12 A.S.12 C + 12 A.S.14 C + 12 A.S.

16 C + 12 A.S.18 C + 12 A.S.20 C + 12 A.S.

22 C + 12 A.S.24 C + 12 A.S.26 C + 12 A.S.

28 C + 12 A.S.30 C + 12 A.S.32 C + 12 A.S.

34 C + 12 A.S.36 C + 12 A.S.38 C + 12 A.S.

40 C + 12 A.S.42 C + 12 A.S.48 C + 12 A.S.

54 C + 12 A.S.60 C + 12 A.S.66 C + 12 A.S.

72 C + 12 A.S.78 C + 12 A.S.84 C + 12 A.S.

C + 12 A.S.

96 C + 12 A.S.108

135 DEGREE CROSS

90 DEGREE CROSS

D DIAMETER

DUCT THICKNESS

1) A.S. MEANS ANY SIZE EQUAL TO OR LESS THAN A2) C CAN BE GREATER THAN OR EQUAL TO D

D DIAMETER

A DIAMETER

L LENGTH

DUCT THICKNESS

1) A.S. MEANS ANY SIZE EQUAL TO OR LESS THAN A2) C IS GREATER THAN OR EQUAL TO D

C + 12 A.S.120

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

120 1.414C + 12 A.S.

96 1.414C + 12 A.S.108 1.414C + 12 A.S.

84 1.414C + 12 A.S.

72 1.414C + 12 A.S.78 1.414C + 12 A.S.

66 1.414C + 12 A.S.

54 1.414C + 12 A.S.60 1.414C + 12 A.S.

48 1.414C + 12 A.S.

40 1.414C + 12 A.S.42 1.414C + 12 A.S.

38 1.414C + 12 A.S.

34 1.414C + 12 A.S.36 1.414C + 12 A.S.

32 1.414C + 12 A.S.

28 1.414C + 12 A.S.30 1.414C + 12 A.S.

26 1.414C + 12 A.S.

22 1.414C + 12 A.S.24 1.414C + 12 A.S.

20 1.414C + 12 A.S.

16 1.414C + 12 A.S.18 1.414C + 12 A.S.

14 1.414C + 12 A.S.

10 1.414C + 12 A.S.12 1.414C + 12 A.S.

8 1.414C + 12 A.S.

4 1.414C + 12 A.S.45 DEGREE DOUBLE WYE

A.S.1.414C + 12 A.S.1.414C + 12 A.S.

A.S.1.414C + 12 A.S.

A.S.

1.414C + 12 A.S.

1.414C + 12 A.S.1.414C + 12 A.S.

A.S.1.414C + 12 A.S.1.414C + 12 A.S.

96108120

1.414C + 12

1.414C + 12

1.414C + 12

1.414C + 12

727884

546066

404248

38 1.414C + 12 A.S.

A.S.

A.S.36 1.414C + 12 A.S.

1.414C + 1234

A.S.

A.S.A.S.

A.S.

A.S.A.S.

L LENGTH

A.S.A.S.A.S.

1.414C + 121.414C + 121.414C + 12

A.S.A.S.A.S.

A.S.A.S.

1.414C + 121.414C + 121.414C + 12

1.414C + 12

C DIAMETER

1.414C + 121.414C + 121.414C + 12

283032

1.414C + 121.414C + 121.414C + 12

1.414C + 121.414C + 12

222426

161820

8

10

45 DEGREE WYE


DUCT THICKNESS

A DIAMETER

46

1214

D DIAMETER

DUCT THICKNESS

1) A.S. MEANS ANY SIZE LESS THAN A

2) C IS GREATER THAN OR EQUAL TO D

A DIAMETER

L LENGTH

C DIAMETER

6 1.414C + 12 A.S.

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

A.S. A.S. 0.125A.S. A.S. 0.125A.S. A.S. 0.125

A.S. A.S. 0.125A.S. A.S. 0.125A.S. A.S. 0.125

A.S. A.S. 0.125A.S. A.S. 0.125A.S. A.S. 0.125

A.S. A.S. 0.125A.S. A.S. 0.187A.S. A.S. 0.187

A.S. A.S. 0.187A.S. A.S. 0.187A.S. A.S. 0.187

A.S. A.S. 0.187A.S. A.S. 0.187A.S. A.S. 0.187

A.S. A.S. 0.187A.S. A.S. 0.250A.S. A.S. 0.250

A.S. A.S. 0.250A.S. A.S. 0.250A.S. A.S. 0.250

A.S. A.S. 0.312A.S. A.S. 0.312A.S. A.S. 0.312

A.S. A.S. 0.375A.S. A.S. 0.375A.S. A.S. 0.375

NOTE

101214

A DIAMETER

468

32

222426

2830

161820

L LENGTH

A.S.A.S.A.S.

A.S.A.S.

C DIAMETER

A.S.A.S.A.S.

A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.36 A.S.34

38 A.S.

404248

7884

546066

96108120

72

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.

A.S.

C DIAMETER

4 A.S.6 A.S.8 A.S.

10 A.S.12 A.S.14 A.S.

16 A.S.18 A.S.20 A.S.

22 A.S.24 A.S.26 A.S.

28 A.S.30 A.S.32 A.S.

34 A.S.36 A.S.38 A.S.

40 A.S.42 A.S.48 A.S.

54 A.S.60 A.S.66 A.S.

72 A.S.

108

78 A.S.84 A.S.

DUCT THICKNESS

1) A.S. MEANS ANY SIZE LESS THAN A2) L EQUALS [5(A-C)] OR (1.414D + 12") WHICHEVER IS LONGER

A.S.A.S.A.S.

A.S.

120

D DIAMETER

D DIAMETER

A DIAMETER

L LENGTH

A.S.

96 A.S.

45 DEGREE DOUBLE REDUCING WYE

45 DEGREE REDUCING WYE

3) L EQUALS [5(A-C)] OR (1.414D + 12") WHICHEVER IS LONGER

E DIAMETER

DUCT THICKNESS

1) A.S. MEANS ANY SIZE LESS THAN A2) D IS GREATER THAN OR EQUAL TO E

A.S.

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

D DIAMETER

DUCT THICKNESS

1) A.S. MEANS ANY SIZE LESS THAN A2) C IS GREATER THAN OR EQUAL TO D

A DIAMETER

L LENGTH

C DIAMETER

6 2C + 12 A.S.


DUCT THICKNESS

A DIAMETER

46

1214

8

10

30 DEGREE WYE

161820

222426

283032

2C + 122C + 122C + 12

2C + 122C + 122C + 12

L LENGTH

2C + 122C + 122C + 12

2C + 122C + 122C + 12

2C + 122C + 122C + 12

A.S.A.S.A.S.

A.S.A.S.

C DIAMETER

A.S.A.S.A.S.

A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.36 2C + 12 A.S.

2C + 1234

38 2C + 12 A.S.

404248

7884

546066

96108120

2C + 12

2C + 12

2C + 12

2C + 12

72

A.S.2C + 12 A.S.2C + 12 A.S.

2C + 12 A.S.2C + 12 A.S.

A.S.

2C + 12 A.S.A.S.

2C + 12 A.S.

A.S.2C + 12 A.S.2C + 12 A.S.

4 2C + 12 A.S.30 DEGREE DOUBLE WYE

8 2C + 12 A.S.

10 2C + 12 A.S.12 2C + 12 A.S.14 2C + 12 A.S.

16 2C + 12 A.S.18 2C + 12 A.S.20 2C + 12 A.S.

22 2C + 12 A.S.24 2C + 12 A.S.26 2C + 12 A.S.

28 2C + 12 A.S.30 2C + 12 A.S.32 2C + 12 A.S.

34 2C + 12 A.S.36 2C + 12 A.S.38 2C + 12 A.S.

40 2C + 12 A.S.42 2C + 12 A.S.48 2C + 12 A.S.

54 2C + 12 A.S.60 2C + 12 A.S.66 2C + 12 A.S.

72 2C + 12 A.S.78 2C + 12 A.S.84 2C + 12 A.S.

120 2C + 12 A.S.

96 2C + 12 A.S.108 2C + 12 A.S.

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

A.S. A.S. 0.125A.S. A.S. 0.125A.S. A.S. 0.125

A.S. A.S. 0.125A.S. A.S. 0.125A.S. A.S. 0.125

A.S. A.S. 0.125A.S. A.S. 0.125A.S. A.S. 0.125

A.S. A.S. 0.125A.S. A.S. 0.187A.S. A.S. 0.187

A.S. A.S. 0.187A.S. A.S. 0.187A.S. A.S. 0.187

A.S. A.S. 0.187A.S. A.S. 0.187A.S. A.S. 0.187

A.S. A.S. 0.187A.S. A.S. 0.250A.S. A.S. 0.250

A.S. A.S. 0.250A.S. A.S. 0.250A.S. A.S. 0.250

A.S. A.S. 0.312A.S. A.S. 0.312A.S. A.S. 0.312

A.S. A.S. 0.375A.S. A.S. 0.375A.S. A.S. 0.375

NOTE

30 DEGREE DOUBLE REDUCING WYE


3) L EQUALS [5(A-C)] OR (2D + 12") WHICHEVER IS LONGER

E DIAMETER

DUCT THICKNESS

1) A.S. MEANS ANY SIZE LESS THAN A2) D IS GREATER THAN OR EQUAL TO E

A.S.120

D DIAMETER

D DIAMETER

A DIAMETER

L LENGTH

A.S.

96 A.S.

DUCT THICKNESS

1) A.S. MEANS ANY SIZE LESS THAN A2) L EQUALS [5(A-C)] OR (2D + 12") WHICHEVER IS LONGER

A.S.A.S.A.S.

A.S.

108

78 A.S.84 A.S.

72 A.S.

60 A.S.66 A.S.

54 A.S.

42 A.S.48 A.S.

40 A.S.

36 A.S.38 A.S.

34 A.S.

30 A.S.32 A.S.

28 A.S.

24 A.S.26 A.S.

22 A.S.

18 A.S.20 A.S.

16 A.S.

12 A.S.14 A.S.

10 A.S.

6 A.S.8 A.S.

C DIAMETER

4 A.S.

A.S.

A.S.

A.S.

A.S.A.S.

A.S.A.S.A.S.

96108120

727884

546066

404248

38 A.S.

A.S.

A.S.36 A.S.34

A.S.

A.S.A.S.

A.S.

A.S.A.S.

C DIAMETER

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.

L LENGTH

2830

161820

32

222426

A DIAMETER

468

101214

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375120 120 120

96 96 96108 108 108

78 78 7884 84 84

72 72 72

60 60 6066 66 66

54 54 54

42 42 4248 48 48

40 40 40

36 36 3638 38 38

34 34 34

30 30 3032 32 32

28 28 28

24 24 2426 26 26

22 22 22

18 18 1820 20 20

16 16 16

12 12 1214 14 14

10 10 10

90 DEGREE WYE

8 8 86 6 64 4 4

A.S.A.S. A.S.A.S. A.S.

A.S.A.S. A.S.

A.S.

A.S. A.S.

A.S. A.S.A.S. A.S.


96108120

A.S.

A.S.

A.S.

A.S.

727884

546066

404248

38 A.S. A.S.

A.S.

A.S.36 A.S. A.S.

A.S.34

A.S.

A.S.A.S.

A.S.

A.S.A.S.

D DIAMETER

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.

A.S.A.S.A.S.

A.S.

C DIAMETER

A.S.A.S.A.S.

283032

A.S.A.S.A.S.

A.S.A.S.

222426

161820

8

10



DUCT THICKNESS

A DIAMETER

46

1214

A DIAMETER

C DIAMETER

D DIAMETER

DUCT THICKNESS

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

101214

A DIAMETER

468

32

222426

2830

161820

A.S.

L LENGTH

A.S.A.S.A.S.

A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.A.S.

C OFFSET

A.S.A.S.A.S.

A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.36 A.S. A.S.

A.S.34

38 A.S. A.S.

404248

7884

546066

96108120

A.S.

A.S.

A.S.

A.S.

72


A.S. A.S.A.S. A.S.

A.S.

A.S. A.S.

A.S. A.S.

C LENGTH

4 12 A.S.6 12 A.S.8 12 A.S.

10 12 A.S.12 12 A.S.14 24 A.S.

16 24 A.S.18 24 A.S.20 24 A.S.

22 24 A.S.24 24 A.S.26 36 A.S.

28 36 A.S.30 36 A.S.32 36 A.S.

34 36 A.S.36 36 A.S.38 48 A.S.

40 48 A.S.42 48 A.S.48 48 A.S.

54 60 A.S.60 60 A.S.66 60 A.S.

72 60 A.S.

108

78 60 A.S.84 60 A.S.

A.S. MEANS ANY SIZE


A.S.

120

DUCT THICKNESS

D LENGTH

A DIAMETER

L LENGTH

60 A.S.

96 60 A.S.

OFFSET

SQUARE TO ROUND TRANSITIONDUCT

THICKNESS

A.S. MEANS ANY SIZE

60 A.S.

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.125A.S. 0.125

A.S. 0.125A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.187A.S. 0.187

A.S. 0.187A.S. 0.250A.S. 0.250

A.S. 0.250A.S. 0.250A.S. 0.250

A.S. 0.312A.S. 0.312A.S. 0.312

A.S. 0.375A.S. 0.375A.S. 0.375

NOTE

6 (A-C)5 A.S.


8 (A-C)5 A.S.

DUCT THICKNESS

A DIAMETER

L LENGTH

C DIAMETER

D LENGTH


DUCT THICKNESS

A DIAMETER

46

1214

8

10

CONCENTRIC REDUCER

161820

222426

283032

(A-C)5(A-C)5(A-C)5

(A-C)5(A-C)5(A-C)5

L LENGTH

(A-C)5(A-C)5(A-C)5

(A-C)5(A-C)5(A-C)5

(A-C)5(A-C)5(A-C)5

A.S.A.S.A.S.

A.S.A.S.

C DIAMETER

A.S.A.S.A.S.

A.S.

A.S.A.S.A.S.

A.S.A.S.A.S.

A.S.36 (A-C)5 A.S.

(A-C)534

38 (A-C)5 A.S.

404248

7884

546066

96108120

(A-C)5

(A-C)5

(A-C)5

(A-C)5

72

A.S.(A-C)5 A.S.(A-C)5 A.S.

(A-C)5 A.S.(A-C)5 A.S.

A.S.

(A-C)5 A.S.A.S.

(A-C)5 A.S.

A.S.(A-C)5 A.S.(A-C)5 A.S.

4 (A-C)5 A.S.ECCENTRIC REDUCER

10 (A-C)5 A.S.12 (A-C)5 A.S.14 (A-C)5 A.S.

16 (A-C)5 A.S.18 (A-C)5 A.S.20 (A-C)5 A.S.

22 (A-C)5 A.S.24 (A-C)5 A.S.26 (A-C)5 A.S.

28 (A-C)5 A.S.30 (A-C)5 A.S.32 (A-C)5 A.S.

34 (A-C)5 A.S.36 (A-C)5 A.S.38 (A-C)5 A.S.

40 (A-C)5 A.S.42 (A-C)5 A.S.48 (A-C)5 A.S.

54 (A-C)5 A.S.60 (A-C)5 A.S.66 (A-C)5 A.S.

72 (A-C)5 A.S.78 (A-C)5 A.S.84 (A-C)5 A.S.

120 (A-C)5 A.S.

96 (A-C)5 A.S.108 (A-C)5 A.S.

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.2500.2500.250

0.2500.2500.250

NOTE

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

101214

A DIAMETER

468

32

222426

2830

161820

19.312

B FLANGE

O.D.7.3129.312

11.312

21.31223.312

13.31215.31217.312

25.31228.43730.437

32.43734.43736.437

0.1870.1870.187

0.1870.187

FLANGE THICKNESS

0.1870.1870.187

0.187

0.1870.2500.250

0.2500.2500.250

0.25036 40.437 0.250

38.43734

38 42.437 0.250

404244

5456

464850

586072

44.437

54.562

58.562

62.562

52

0.25046.562 0.25048.562 0.250

50.562 0.25052.562 0.250

0.250

56.562 0.250

60.562 0.250

FLANGE THICKNESS

4 8.375 0.2506 10.375 0.2508 12.375 0.250

10 14.375 0.37512 16.375 0.37514 18.375 0.375

16 20.375 0.50018 22.375 0.50020 24.375 0.500

22 26.375 0.50024 28.375 0.50026 30.375 0.500

28 32.375 0.50030 34.375 0.50032 36.375 0.500

34 38.375 0.50036 40.375 0.50038 42.375 0.500

40 44.375 0.50042 46.375 0.62548 54.375 0.625

54 60.375 0.62560 66.375 0.62566 72.375 0.625

72 78.375 0.750

108

78 84.375 0.75084 90.375 0.750

STANDARD FLANGES ARE SHIPPED UNDRILLED

0.25064.562 0.25076.562 0.250

0.250

120

DUCT THICKNESS

DUCT THICKNESS

A DIAMETER

B FLANGE

O.D.

126.375 0.750

96 102.375 0.750

2) STANDARD GASKET MATERIAL IS EITHER NEOPRENE OR CLOSED CELL PVC F

6" STUB FLANGE

6" STUB WITH BLIND FLANGE

1) STANDARD BLIND FLANGES USE DRILL PATTERNS FROM NBS PS15-69

114.375 0.750

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

A DIAMETER

B FLANGE

OD FLANGE

THICKNESSDUCT

THICKNESS

A DIAMETER

46

1214

8

10

VOLUME DAMPER WITH PLAIN END

161820

222426

283032

0.1250.1250.125

0.1250.1250.125

DUCT THICKNESS

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

36 0.1870.18734

38 0.187

404248

546066

120

0.187

0.250

0.312

0.375

727884

0.2500.250

0.2500.250

0.312

0.312

4 8.375 0.250

0.3750.375

96108

8 12.375 0.2506 10.375 0.250

10 14.375 0.37512 16.375 0.37514 18.375 0.375

16 20.375 0.50018 22.375 0.50020 24.375 0.500

22 26.375 0.50024 28.375 0.50026 30.375 0.500

28 32.375 0.50030 34.375 0.50032 36.375 0.500

34 38.375 0.50036 40.375 0.50038 42.375 0.500

40 44.375 0.50042 46.375 0.62548 54.375 0.625

54 60.375 0.62560 66.375 0.62566 72.375 0.625

72 78.375 0.750

102.375 0.750108

78 84.375 0.75084 90.375 0.750

114.375

STANDARD VOLUME DAMPER FLANGES ARE SHIPPED UNDRILLED

VOLUME DAMPER WITH FLANGES

0.750120 126.375 0.750

96

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE

101214

A DIAMETER

468

32

222426

2830

161820

0.125

DUCT THICKNESS

0.1250.1250.125

0.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

36 0.1870.18734

38 0.187

404248

7884

546066

96108120

0.187

0.250

0.312

0.375

72

0.2500.250

0.2500.250

0.312

0.312

FLANGE THICKNESS

4 8.375 0.2506 10.375 0.2508 12.375 0.250

10 14.375 0.37512 16.375 0.37514 18.375 0.375

16 20.375 0.50018 22.375 0.50020 24.375 0.500

22 26.375 0.50024 28.375 0.50026 30.375 0.500

28 32.375 0.50030 34.375 0.50032 36.375 0.500

34 38.375 0.50036 40.375 0.50038 42.375 0.500

40 44.375 0.50042 46.375 0.62548 54.375 0.625

54 60.375 0.62560 66.375 0.62566 72.375 0.625

72 78.375 0.750

108

78 84.375 0.75084 90.375 0.750

0.3750.375

120

DUCT THICKNESS

A DIAMETER

B FLANGE

O.D.

126.375 0.750

96 102.375 0.750

BLASTGATE WITH PLAIN END

BLASTGATE WITH FLANGES

STANDARD BLASTGATE FLANGES ARE SHIPPED UNDRILLED

114.375 0.750

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE:

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

A DIAMETER

L LENGTH

C DIAMETER

DUCT THICKNESS

1214

LOADS FOR VIRON TO DESIGN STACK

161820

2224

DUCT THICKNESS

A DIAMETER

B DIAMETER

L LENGTH

8

10

NO-LOSS STACK CAP46

26

283032

141618

202224

81012

262830

323436

526068

7684

283644

92

100108116

124132140

14836 40 156

3834

38 42 164

404248

546066

120

44

72

84

102

727884

17246 18054 204

60 22866 252

276

78 300324

90 348

4 8 8

396114 444126 492

96108

8 16 166 12 12

10 20 2012 24 2414 28 28

16 32 3218 36 3620 40 40

22 44 4424 48 4826 52 52

28 56 5630 60 6032 64 64

34 68 6836 72 7238 76 76

40 80 8042 84 8448 96 96

54 108 10860 120 12066 132 132

72 144 14478 156 15684 168 168

96 192 192108 216

FOR OTHER THAN STANDARD DESIGNS, CUSTOMER MUST PROVIDE WIND

RAIN CAP

216120 240 240

12 0.250 0.12513 0.250 0.12514 0.250 0.125

15 0.375 0.12516 0.375 0.12517 0.375 0.125

18 0.500 0.12519 0.500 0.12520 0.500 0.125

21 0.500 0.12522 0.500 0.18723 0.500 0.187

24 0.500 0.18725 0.500 0.18726 0.500 0.187

27 0.500 0.18728 0.500 0.18729 0.500 0.187

30 0.500 0.18731 0.625 0.25034 0.625 0.250

37 0.625 0.25040 0.625 0.25043 0.625 0.250

46 0.750 0.31249 0.750 0.31252 0.750 0.312

58 0.750 0.37564 0.750 0.37570 0.750 0.375

NOTE2) C.F. MEANS CONSULT FACTORY

BUTTERFLY STACK CAP

OFFSET STACK

1) A.S. MEANS ANY SIZE

A.S. C.F.120

L LENGTH

A DIAMETER

L HEIGHT

STACK THICKNESS

78.375

78 84.375

A.S. C.F.

96 A.S. C.F.108

E FLANGE

THICKNESSDUCT

THICKNESS

108.375114 120.375126 132.375

90.375

C.F.84 A.S. C.F.

72 A.S. C.F.78 A.S.

60 A.S. C.F.66 A.S. C.F.

54 A.S. C.F.

42 A.S. C.F.48 A.S. C.F.

40 A.S. C.F.

36 A.S. C.F.38 A.S. C.F.

34 A.S. C.F.

30 A.S. C.F.32 A.S. C.F.

28 A.S. C.F.

24 A.S. C.F.26 A.S. C.F.

22 A.S. C.F.

18 A.S. C.F.20 A.S. C.F.

16 A.S. C.F.

12 A.S. C.F.14 A.S. C.F.

10 A.S. C.F.

C.F.8 A.S. C.F.

108120

6 A.S.

66.37566 72.375

4 A.S. C.F.

90 96.375

44

72

48.37546 50.37554 60.375

60

84

102

727884

96

546066

404248

38 42 46.375

40.375

42.37536 40 44.375

3834

34.375

36.37538.375

28.375

30.37532.375

C DIAMETER

12.37514.37516.375

323436

18.37520.37522.375

24.37526.375

262830

2224

141618

B DIAMETER

81012

2830

161820

20

A DIAMETER

468

3) ALL OFFSET STACKS ARE DESIGNED WITH GUY WIRES. FREE STANDING STACKS ARE AVAILBLE, CONSULT THE FACTORY

101214

32

222426

A + 8 0.125A + 8 0.125A + 8 0.125

A + 8 0.125A + 8 0.125A + 8 0.125

A + 8 0.125A + 8 0.125A + 8 0.125

A + 8 0.125A + 8 0.187A + 8 0.187

A + 8 0.187A + 8 0.187A + 8 0.187

A + 8 0.187A + 8 0.187A + 8 0.187

A + 8 0.187A + 8 0.250A + 8 0.250

A + 8 0.250A + 8 0.250A + 8 0.250

A + 8 0.312A + 8 0.312A + 8 0.312

A + 8 0.375A + 8 0.375A + 8 0.375

NOTE:

0.1250.1250.125

0.1250.1250.125

0.1250.1250.125

0.1250.1870.187

0.1870.1870.187

0.1870.1870.187

0.1870.2500.250

0.2500.2500.250

0.3120.3120.312

0.3750.3750.375

NOTE:

BOOT

A + 6

A.S. MEANS ANY SIZE GREATER THAN A

120 A.S. A + 6

96 A.S. A + 6108

78 A.S. A + 684 A.S. A + 6

A.S.

72 A.S. A + 6

60 A.S. A + 666 A.S. A + 6

54 A.S. A + 6

42 A.S. A + 648 A.S. A + 6

40 A.S. A + 6

36 A.S. A + 638 A.S. A + 6

34 A.S. A + 6

30 A.S. A + 632 A.S. A + 6

28 A.S. A + 6

24 A.S. A + 626 A.S. A + 6

22 A.S. A + 6

18 A.S. A + 620 A.S. A + 6

16 A.S. A + 6

12 A.S. A + 614 A.S. A + 6

10 A.S. A + 6

8 A.S. A + 66 A.S. A + 64 A.S. A + 6

1/2 B A.S. 1/2 B A.S. 1/2 B

96108

1/2 B A.S. 1/2 B

1/2 B

A.S. 1/2 B

A.S. 1/2 B A.S. 1/2 B

1/2 B A.S. 1/2 B A.S. 1/2 B

120

A.S.

A.S.

A.S.

A.S.

727884

546066

404248

38 A.S. 1/2 B

1/2 B

1/2 B 36 A.S. 1/2 B

A.S.34

1/2 B

1/2 B 1/2 B

1/2 B

1/2 B 1/2 B

C HEIGHT

1/2 B 1/2 B 1/2 B

A.S.A.S.A.S.

1/2 B 1/2 B 1/2 B

1/2 B 1/2 B

A.S.A.S.A.S.

A.S.

B DIAMETER

A.S.A.S.A.S.

283032

A.S.A.S.A.S.

A.S.A.S.

222426

161820

8

10

SADDLE TAP

A.S. MEANS ANY SIZE GREATER THAN A

L LENGTH

DUCT THICKNESS

A DIAMETER

46

1214

A DIAMETER

B DIAMETER

L LENGTH

DUCT THICKNESS

NOTE:

NOTE

3) ALL OFFSET STACKS ARE DESIGNED WITH GUY WIRES. FREE STANDING STACKS ARE AVAILBLE, CONSULT THE FACTORY

FLANGED CONNECTOR WITH PVC FLEX

101214

32

222426

A DIAMETER

468

2830

161820

20.375

B FLANGE O.D

8.37510.37512.375

22.37524.375

14.37516.37518.375

26.37528.37530.375

32.37534.37536.375

0.3750.3750.375

0.5000.500

FLANGE THICKNESS

0.2500.2500.250

0.500

0.500

0.5000.500

36 40.375 0.50038.37534

38 42.375 0.500

404248

96

546066

727884

44.375

72.375

0.50046.375 0.62554.375 0.625

60.37566.375 0.625

4

90.375 0.75084.375

108120

6

A DIAMETER

8

101214

161820

222426

283032

343638

404248

54

6660

727884

1) PVC FLEX MATERIAL IS .125" THICK2) STANDARD FLANGES ARE SHIPPED UNDRILLED

0.750114.375 0.750126.375

0.625

0.625

0.500

0.500

0.500

0.500

96108

78.375 0.750

0.750

0.750

102.375

1/8" PVC FLEXIBLE MATERIAL

2) C.F. MEANS CONSULT FACTORY

FIRE SPRINKLER ACCESS DOOR

1) A.S. MEANS ANY SIZE

120

4.375 0.1256.375 0.1258.375 0.125

10.375 0.12512.375 0.12514.375 0.125

16.375 0.12518.375 0.12520.375 0.125

22.375 0.12524.561 0.18726.561 0.187

28.561 0.18730.561 0.18732.561 0.187

34.561 0.18736.561 0.18738.561 0.187

40.561 0.18742.750 0.25048.750 0.250

54.750 0.25060.750 0.25066.750 0.250

72.936 0.31278.936 0.31284.936 0.312

97.125 0.375109.125 0.375121.125 0.375

4.375 0.1256.375 0.1258.375 0.125

10.375 0.12512.375 0.12514.375 0.125

16.375 0.12518.375 0.12520.375 0.125

22.375 0.12524.561 0.18726.561 0.187

28.561 0.18730.561 0.18732.561 0.187

34.561 0.18736.561 0.18738.561 0.187

40.561 0.18742.750 0.25048.750 0.250

54.750 0.25060.750 0.25066.750 0.250

72.936 0.31278.936 0.31284.936 0.312

97.125 0.375109.125 0.375121.125 0.375

A DIAMETER

DUCT THICKNESS

DUCT THICKNESSEND CAP

A DIAMETER

COUPLING

NOTE:

0.250 0.1250.250 0.1250.250 0.125

0.375 0.1250.375 0.1250.375 0.125

0.500 0.1250.500 0.1250.500 0.125

0.500 0.1250.500 0.1870.500 0.187

0.500 0.1870.500 0.1870.500 0.187

0.500 0.1870.500 0.1870.500 0.187

0.500 0.1870.625 0.2500.625 0.250

0.625 0.2500.625 0.2500.625 0.250

0.750 0.3120.750 0.3120.750 0.312

0.750 0.3750.750 0.3750.750 0.375

NOTE

0.312

2) STANDARD FLANGES ARE SHIPPED UNDRILLED

CURB CAP WITH FLANGED DUCTDUCT

THICKNESS

114.375 119120

D FLANGE

THICKNESS

96 102.375 107108

0.312

C LENGTH

126.375 131

8990.375

0.250

0.375119 0.375131 0.375

8378 84.375

9584

72 78.375

7166 72.375 7760 66.37554 60.375 65

42 46.375 5348 54.375 59

40 44.375 51

36 40.375 4738 42.375 49

34 38.375 45

30 34.375 4132 36.375 43

28 32.375 39

24 28.375 3526 30.375 37

22 26.375 33

18 22.375 2920 24.375 31

16 20.375 27

12 16.375 2314 18.375 25

10 14.375 21

178 12.375 19

108120

6 10.375

A DIAMETER

B DIAMETER

0.25071 0.250

4 8.375 15

95 0.312

51

77

0.18753 0.25059 0.250

65

89

107

727884

96

83

546066

404248

38 49 0.187

0.187

0.18736 47 0.187

4534

0.187

0.1870.187

0.125

0.1250.187

DUCT THICKNESS

0.1250.1250.125

394143

0.1250.1250.125

0.1250.125

333537

2931

212325

C LENGTH

151719

2830

161820

27

222426

A DIAMETER

468

1) VIRON CAN CUSTOM MANUFACTURE ANY CURB CAP TO FIT AN EXISTING ROOF CURB, CONSULT THE FACTORY

VIRON CAN CUSTOM MANUFACTURE ANY CURB CAP TO FIT AN EXISTING ROOF CURB, CONSULT THE FACTORY

CURB CAP WITH PLAIN END DUCT

101214

32

utilizing computer controlled, filament winding machines. Similar in appearance to standardduct, this machines can increase the glass content and therefore optimize the physical strengths

6. In addition to hand lay-up fabrication methods, VIRON® can also manufacture fiberglass duct

for this standard duct are shown on page 31. If your project requires an increase of either pressureor vacuum, VIRON® can design the duct and fittings to meet your requirements.

5. All VIRON® fiberglass duct is manufactured per NBS PS15-69. The pressure and vacuum ratings

and special additives. We can help you specify the right material for your application. Contactour application engineers for valuable input to your corrosion problems.

representative for pricing and availability.

maximize the corrosion resistance for these projects, VIRON offers a wide variety of resins, glass,

VIRON® can manufacture any radius length to meet your requirements. Consult your localrepresentative.

3. Reducers are manufactured with a standard length (large diameter - small diameter) times(5). Custom lengths are available from the factory. Consult your local representative.

4. All VIRON® fiberglass duct is custom manufactured for each individual project. In order to

—GENERAL NOTES―As in all catalogs, we are making certain assumptions in order to come up with standard fittings.Listed below are some notes which may help clarify some common misconceptions:

2. Standard elbows are manufactured with a centerline radius 1.5 times the diameter. However,

1. VIRON® can manufacture rectangular duct, see pages 32 through 35. Consult your local

VIRON® manufactures all PVC duct and fittings with plain ends as shown in the middle illustrationabove. Both flanged and bell and spigot ends are available upon request. Please consult your localrepresentative for further details.

of the duct. Increased pressure or vacuum ratings can be designed simply and easily. Consultyour local representative for further information.

A.

1.

B.1.

2.

3.

C.1.

2.

3.

4.

5.

6.

Testing and Materials (ASTM) Designation D883-69, Standard Nomenclature Relating

SPECIFICATIONS FOR CONTACT MOLDED DUCTINGFEATURES

mat, impregnated with resin, to a ratio of two-thirds resin to one-third glass fiber.

intended to cover selection of the exact resin or reinforcement combination for use in specificis based on existing technology and accepted industry practice. This standard is not

The following is a specification for contact molded glass fiber reinforced process ductingand fittings as developed and adhered to by VIRON® INTERNATIONAL CORPORATION. This specifications conforms with the National Bureau of Standard's Voluntary ProductStandard PS 15-69 and covers construction, workmanship, test procedures, and auxiliariesfor products intended for use in aggressive chemical environments. The product standard

chemical and structural conditions. Terminology - Unless otherwise indicated, the plastics terminology used in thisStandard shall be in accordance with the definitions given in American Society for

to Plastics. MATERIALS

manufactured by Owens-Corning and Johns-Mansville, or equal. fiber having a suitable bond between glass reinforcement and resin such as

Resin - The resin used shall be of a commercial grade and shall either be evaluatedas a laminate by test or determined by previous service to be acceptable for theenvironment. Reinforcing Material - The reinforcing material shall be a commercial grade of glass

Fillers - The resins used shall not contain fillers except as required for viscositycontrol or fire retardance. Up to 5 percent by weight of thixotropic agent which will notinterfere with visual inspection may be added to the resin for viscosity control. Resinsmay contain pigments and dyes by agreement between fabricator and purchaser,recognizing that such additions may interfere with visual inspection of laminatequality. Antimony compounds or other fire retardant agents may be added as requiredfor improved fire resistance.

PRODUCTSLaminate - The laminate shall consist of an inner surface, a first and second interiorlayer, an exterior layer, and an exterior gel coat. Inner Surface - The inner surface shall be free of cracks and crazing with a smoothfinish, resin rich to avoid exposure of glass fibers. Some waviness is permissable aslong as the surface is smooth and free of pits. Glass or synthetic veil shall be used onthe inner surface to provide a .030" resin rich surface of 90% resin, 10% glass.

as mat, cloth or woven roving are used, all layers shall be lapped a minimum of 1 inch.

First Interior Layer - The first interior layer shall consist of 1½ ounce chopped strand

mat, impregnated with resin, to a ratio of two-thirds resin to one-third glass fiber.Exterior Layer - The exterior layer of body of the laminate shall be of chemicallyresistant construction suitable for the service and providing the additional strengthnecessary to meet the tensile and flexural requirements. Where separate layers such

Second Layer Interior - The second interior layer shall consist of three ounce strand

Laps shall be staggered as much as possible. If woven roving or cloth is used, alayer of chopped strand glass shall be placed as alternate layers. The exteriorsurface shall be relativelt smooth with no exposed fibers or sharp projections.Hand work finish is acceptable, but enough resin shall be present to prevent fiber

Exterior Gel Coat - The gel coat shall be commercially available material, consistingof polyester resin, a pigment for color, and an ultra-violet light inhibitor.

show. When the outer surface is subject to a corrosive environment, the exteriorsurface shall consist of a chopped strand glass over which shall be applied a resinrich coating. Other methods of surface protection may be used as agreed uponbetween buyer and seller.

D.1.

2.

3.

E.1.

2.

3.

4.

5.6.

7.

F.1.

2.

Eccentric or Concentric Reducers - Length of standard reducers, unless otherwise

diameter. Laterals - Standard laterals shall be 45 degrees.

Wall Thickness - The minimum nominal wall thickness of round ducting shall be inaccordance with Table I, for rectangular ducting, the minimum wall thickness shallbe as specified in Table I, substituting the longer side for the diameter. Ells - Standard ells shall have a centerline radius of one and one-half times the duct

thickness, and 6 inches for 1/4 inchs thickness. Bell and Spigot Joints - Straight duct shall be inserted into bell at least one-sixth ofthe duct perimeter or four inches, whichever is less, and overwrapped as to providestrength at least equal to that of the duct.

Butt Joints - Strength of the butt joint shall be at least equal to that of the duct. Totalminimum width of the joint shall be 3 inches for 1/8 inch thickness, 4 inches for 3/16 inch

specified, shall be three times the difference in diameters. Minimum wall thicknessshall be that required for the larger diameter duct. Fittings - Tolerances on angles shall be + 1° through 24 inches, + 7/8° for 30 inches, +3/4° for 36 inches, + 5/8° for 42 inches, and + 1/2° for 48 inches and above. Wallthickness of the fittings shall be at least that of the ducting of equivalent size.

STRAIGHT CONNECTIONS

on the joint. Crevices between jointed pieces shall be filled with resin or thixotropicresin paste, leaving a smooth inner surface. The interior of joints may also be sealed by

Round Ducting - The size of round ducting shall be determined by the insidediameter in inches. The standard sizes shall be 4", 6", 8", 10", 12", 14", 16", 18", 20",

DUCT SIZES AND TOLERANCEScovering with no less than 0.100 inch of reinforced resin rich surface.

24", 30", 36", 42", 48", 54", and 60". Unless otherwise specified, the tolerance, including

Rectangular Ducting - The sizes of rectangular ducting shall be determined bythe inside dimensions. There are no standard sizes for rectangular ducting. Unlessotherwise specified, the tolerances on ordered sizes shall be + 1/4 inch for dimensions

out-of-roundness, shall be + 1/8 inch for ducting up to and including 12 inch, and + 1/4inch or + 1%, whichever is greater, for ducting exceeding 12 inches.

of 18 inch and under and + 1% on dimensions greater than 18 inches.

FINISHAppearance - The finished laminate shall be as free as commercially practical fromvisual defects such as foreign inclusions, dry spots, air bubbles, pin holes, anddelamination. Cut Edges - All cut edges shall be coated with resin so that no glass fibers areexposed and all voids filled. Structural elements having edges exposed to the chemicalenvironment shall be made with chopped strand glass reinforcement only.

SPECIFICATIONS FOR CONTACT MOLDED DUCTING (cont'd)

Joints - Finished joints shall be built up in sucessive layers and be as strong as

of the first layer shall be 2 inches minimum. Successive layers shall increaseuniformly to provide the specified minimum total width of overlay which shall be centered

the pieces being joined and as crevice free as is commercially precticable. The width

G.1.

2.

3.

4.

H.1.

2.

3.

4.

I. 1.

2.

3.

J. 1.

2.

3.

Mixing of Bonding Material - Polyester resin is mixed with MEKP just prior to

INSPECTION AND TEST PROCEDURES


same construction and by the same techniques as the process equipment. In all cases,the average value of the indicated number of specimens shall be used to determine

Drilling - Standard flanges shall be supplied undrilled unless drilling is specified by

Flange Bolting - The bolt holes shall straddle the centerline unless otherwise specified.The number of bolt holes and the size shall be as specified in Table I. Rectangular flange

and expense of the customer.

the customer.

RECOMMENDED PRACTICE FOR JOINING

suitable for the environment. Gaskets should have a Shore A or Shore A2 hardness

FLANGES

Specimens - Tests shall be made on specimens cut from waste areas when

Flange Attachment - Duct walls at hub of flange shall be at least one and one-halftimes the normal thickness of the duct and taper to normal thickness over a distanceof the flange width. Face of Flange - Face of flange shall have no projections or depressions and shallbe perpendicular to the center line of the duct. A camber of 1/8 inch with respect to thecenter line, measured at the O. D. of the flange shall be allowable.

bonding. The general mixture is 1-2% catalyst (MEKP) to resin. This will vary with

Underground Installation - Fiberglass duct as manufactured by VIRON® is not

Gaskets - Gaskets shall be furnished by the customer unless otherwise specified.

recommended for underground installation.

conformance with detailed requirements.

possible; otherwise, the specimens shall be cut from flat laminates prepared in the

Bolts, Nuts and Washers - Bolts, nuts and washers shall be furnished by thecustomer unless otherwise specified. Metal washers shall be used under all nuts andbolt heads. All nuts, bolts and washers shall be of a material suitable for the exterior environment.

Preparation of Duct Surface - Surface of the duct should be sanded or ground to

width and bolt spacing shall be the same as that for the diameters corresponding to thelonger side.

Duct Hanger and Spacing - Hangers shall be band type hangers contacting 180%of the duct surface. The maximum duct hanger spacing shall be in accordance with

Electrical Insulating Materials for Testing.

Test - Tests shall be performed by an independent testing laboratory at the option

Conditioning - The test specimens shall be conditioned in accordance with ProcedureA of ASTM Designation D618-61, Standard Methods of Conditioning Plastics and

RECOMMENDED INSTALLATION PRACTICE

necessary to obtain the thickness desired.

Gasketing material shall be at least 1/8 inch in thickness with a chemical resistance

temperature and humidity conditions. Glass Fiber Mat - The glass fiber mat should be precut to the appropriate widths

of 40-70.

a rough finish approximately 6 inches back from joint.

Table I.

K.1.

2.

3.

4.

5.

TESTS


Flexural Strength - Flexural strength shall be determined in accordance with

Flexural Modulus - The tangent modulus of elasticity in flexure shall be determined

width of the reduced section shall be 1 inch. Other dimensions of specimens shall

Procedure A and Table II of ASTM Designation D790-66, Standard Method of Test for

Glass Content - The glass content shall be determined in accordance with ASTMDesignation D2584-67T. Tentative Method of Test for Ignition Loss or CuredReinforced Resins, except that the specimens tested shall be approximately 1 square

Tensile Strength - Tensile strength shall be determined in accordance with ASTMDesignation D638-68, Standard Method of Test for Tensile Properties of Plastics,except that the specimens shall be the actual thickness of the fabricated article and the

a Barcol Impressor. Calibration of the Barcol instrument shall be verified by comparingwith blank specimens having known readings of 85 to 87 and 42 to 46. Ten readings onthe clean resin rich surface shall be made. After eliminating two higher and two lower

be as designated by the ASTM Standard for Type I specimens for material over 1/2inch to 1 inch, inclusive. Specimens shall not be machined on the surface. Tensile

Hardness - The hardness shall be determined in accordance with ASTM DesignationD2583-67, Standard Method of Test for Indentation Hardness of Plastics by Means of

by ASTM Method D790-66.

readings, the average of the remainder shall be the reported hardness reading.

inch in area, and low temperature preignition prior to placement in muffle furnace isrecommended. The average for five specimens shall be consisdered to be the glasscontent.

Flexural Properties of Plastcis, except that the specimens shall be the actual thicknessof fabricated item and the width shall be 1 inch. Other dimensions of specimens shall beas designated by the ASTM Standard. Specimens shall not be machined on the surface.

strength shall be the average of five specimens tested at 0.20 to 0.25 in/min speeds.

Tests shall be made with the resin rich side in compression using five specimens.

Table I. Reinforced-polyester round duct dimensions.

I. D. Inches

Wall Thickness

(Min. Inches)

Allowable vacuum

inches of water

Allowable pressure inches of

water

Flange diameter

(O. D.) inches

Flange thickness

inches

Bolt Circle

diameter inches

Bolt hole diameter inches

No of bolt

holes

Hanger Spacing

23

405405

750500

6-3/87-3/8

0.125

468

10121416182024303642485460

0.1870.2500.2500.250

0.125

0.1870.187

1/41/4

0.1250.125

97

140

56

7/167/16

44

6.06.57.08.08.08.08.08.08.08.08.08.08.0

0.1250.1250.1250.1250.1250.1250.125

0.250

21064301697655

510976

410350180340280220290240190

10070

1201008060

8-3/810-3/812-3/814-3/816-3/818-3/820-3/822-3/824-3/828-3/834-3/840-3/846-3/854-3/860-3/866-3/8

1/41/41/43/83/83/81/21/21/21/21/21/25/85/85/85/8

79

1113151719212327333945525864

7/167/167/167/167/167/167/16

7/169/169/16

7/167/167/167/16

9/16

488

1212121616

7/16

2020283236444452 8.0

8.08.08.08.0

22,000

1,000,000

Flexural strength -minimum-

Flexural modulus of elasticity (tangent)

-minimum-

psi

12,000

psi

700,000 800,000 900,000

1/8 to 3/16

Table II. Requirements for properties of reinforced-polyester laminates.

Thickness (inches)

5/16 3/8 and upProperty at

73.4°F (23°C) 1/4

Ultimate tensile strength-minimum-

psi

9,000

psi

13,500 15,000

16,000 19,000 20,000

FORM: MP-114 Effective December 1993

Supercedes All Previous Warranties

• LIMITED WARRANTY

VIRON® INTERNATIONAL warrants to the dealers and owners its VIRON® products and parts to be free from defects in workmanship and material under normal use and services for one (1) year after the date of shipment by VIRON to the first retail purchaser or first user: if and only if VIRON® is notified in writing of the defect within fourteen (14) days from date that the defect is discovered. Written notice of defects discovered within the final fourteen (14) days of the warranty period must be sent to VIRON® via facsimile or first class mail prior to the expiration of the warranty period otherwise this warranty shall be void. Our obligation under this warranty is expressly limited to repairing or replacing at our option, without cost at our factory any part or parts therof which shall be returned to and received by VIRON® within such warranty period with transportation charges both to and from VIRON® prepaid, and which our examination shall disclose to our satisfaction to have been defective. In the event a defect is discovered within the final seven days of the warranty period, the returned goods must be received by VIRON® at VIRON®’s facility within seven days following expiration of the warranty period. Any request for repair or replacement should be directed to VIRON® INTERNATIONAL, Owosso, MI. If examined equipment is found not to be defective or for some other reason not to be within the warranty coverage, seller’s service time expended on and off location will be charged to the purchaser. This warranty gives you specific legal rights which vary from state to state. FAILURE TO PAY THE INVOICE IN FULL WILL RESULT IN VOIDING ANY AND ALL WARRANTIES.

• LIMITATION OF WARRANTY AND LIABILITY This warranty does not apply to such VIRON® products and parts which in the sole judgment of VIRON® have failed as a result of faulty installation or abuse, or incorrect electrical connections or alterations, made by others, or use under abnormal operating conditions or misapplication of products and parts. This warranty does not apply to damage resulting from shipment or storage of VIRON® products. Purchaser acknowledges that VIRON® products contain rotating parts that may be damaged by the forces of nature if not installed or put to their intended use within seven (7) days of delivery. THIS WARRANTY DOES NOT COVER COMPONENT PARTS THAT CARRY A SEPARATE WARRANTY FROM THE MANUFACTURER OF THE COMPONENT PART. VIRON® will not approve for payment any repair made outside its factory without prior written consent of its Owosso, Michigan office. The foregoing shall constitute our sole and exclusive warranty and our sole and exclusive liability and is in lieu of all other warranties, whether written, oral, implied or statutory. THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE PAGE HEREOF. SELLER DOES NOT WARRANT MERCHANTABILITY THAT SAID GOODS AND ARTICLES ARE OF MERCHANTABLE QUALITY, OR THAT THEY ARE FIT FOR ANY PARTICULAR PURPOSE. The liability of any seller on any claim of any kind, including contract, warranty, tort, or negligence, for any loss or damage arising out of or connected with or resulting from the sale and purchase of products and parts covered by any VIRON® proposal, acknowledgement, order, or from the performance or breach of any contract pertaining to such sale or purchase, or from the design, manufacture, sale, delivery, resale, installation, technical direction in installation, inspection, repair, operation or use of any products or parts covered by any VIRON® proposal, acknowledgement, order or furnished by seller, shall in no case exceed the price as paid by purchaser allocable to the products or parts therof which give rise to the claim and shall terminate one year after shipment of said products and parts. IN NO EVENT, WHETHER AS A RESULT OF BREACH OF CONTRACT, OR WARRANTY, OR TORT, OR ALLEGED NEGLIGENCE, DEFECTS, INCORRECT ADVICE OR OTHER CAUSES, SHALL SELLER BE LIABLE FOR SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, including but not limited to loss of profits or revenue, loss of use of the equipment or any associated equipment, cost of removal or reinstallation or any cost associated therewith, cost capital, cost of substitute equipment, facilities or services, down time cost, or claims of customers of the purchase of such damages. VIRON® neither assumes nor authorizes any person to assume for it any other liability in connection with the sale of its products and parts. Some states do not allow the exclusion or limitation of incidental or consequential damages, so all of the above limitations or exclusions may not apply to you.

WARRAN

TY

Centrifugal Fan VCF-100

Inline Centrifugal FanVIF-200

Radial BlowerVRB-600

Lab BlowerVLB-700

PushBlowerVPB-800

Roof VentilatorVRV-900

Centrifugal Fan VCB-1100

Gravity Relief VentilatorVGR-1300

Horizontal ScrubberVHS-Series

Vertical ScrubberVVS-Series

Blower-ScrubberVBS-Series

VIRO-CHROME 9000® VCS-Series

VI-A-DUC® FM Approved PVC Duct

VIRO-DUC® FM Approved FRP Duct

SSTEELCOAT® FM Approved Duct

FRP DuctICBO Approved

VI-A-TROL® AMCA Approved Damper

PVC & FRPBlastgates

FRP ParallelBlade Damper

FRP Fixed Louver

FRP DUCT COVER...Title: Microsoft Word - FRP DUCT COVER.doc Author: Staff Created Date: 5/8/2007 12:13:07 PM

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